A newly refurbished memorial to the Claudy bomb attack is set to be unveiled on the 52nd anniversary of the atrocity.
Nine people, Catholics and Protestants, were killed and 30 were injured after three car bombs exploded in Claudy on July 31, 1972. The dead included three children.
The attack was blamed on the Provisional IRA, although the group has never claimed responsibility. No one has ever been convicted of the bombings.
David Temple, whose 16-year-old brother William was killed in the bombings, said the evil of that day should never be forgotten.
He also said he hoped to live to see justice.
“We will fight until we get justice, including myself, and I think that day is not far off,” he said.
“There are a lot of untold stories in Claudy, who was involved. They have got to come up with the answers now because time is running short for people such as myself and most families want justice.
“We will get that someday in the near future. I hope I live long enough to see it.”